A forklift engine vibration reduction device

Abstract

The invention discloses a forklift engine vibration reduction device, aiming to solve the shortcomings of the prior art that the vibration reduction suspension has a non-uniform vibration reduction effect on the forklift engine and cannot reduce vibration in all directions; the invention adopts the following technical solutions to solve the above technical problems: a vibration reduction suspension and a transverse pull rod, the vibration reduction suspension is used to connect the engine and the forklift frame; the transverse pull rod is used to connect the engine and the forklift frame; the vibration reduction suspension comprises: an engine bracket, which is used to connect with the engine; an engine support, which is used to connect with the forklift frame; an upper metal frame, the upper metal plate is in a boxed structure, and the lower end surface has an opening; a lower metal frame, which is buckled with the upper metal frame; a buffer pad, which is arranged in the space where the upper metal frame and the lower metal frame are buckled; the invention arranges the buffer pad between the upper metal frame and the lower metal frame, so that the buffer pad can play a buffering role in all directions.

Description

Technical Field

[0001] The present invention relates to the technical field of engine vibration reduction, and more particularly to a forklift engine vibration reduction device. Background Art

[0002] Comfort is an important research topic in forklift design. During the development and application of rigid transmission forklifts, the engine vibrates greatly and the vibration isolation performance of the engine suspension system is poor, which, to a certain extent, leads to large vibrations in key positions such as the steering wheel, affecting the driver's operating comfort. Existing forklift engine vibration reduction devices mainly rely on the suspension system for vibration isolation, and use the suspension system to eliminate the force transmitted from the engine to the vehicle body to the maximum extent, thereby reducing the vibration of key positions such as the steering wheel. In the prior art, the engine vibration of rigid transmission forklifts is mainly reduced by optimizing the engine suspension system, including optimizing the installation position of the buffer pad, the dynamic and static stiffness value of the buffer pad, the installation method of the buffer pad, and designing a new type of buffer pad; it is effective in reducing the vertical or other direction vibration of the engine, but the overall vibration reduction effect on the engine is not obvious. How to reduce the vibration of the engine in all directions has become an urgent problem to be solved.

[0003] The Chinese patent announcement number is CN107618351A, and the announcement date is September 21, 2017. The name of the invention is a new type of vibration damping suspension, which is connected to the automobile engine and the automobile chassis respectively. The vibration damping suspension includes a shell, a rubber part, a metal plate and a mass block. The rubber part is fixedly arranged in the shell, the metal plate passes through the rubber part and extends from the side of the rubber part, and the mass block is arranged on the part where the metal plate extends from the rubber part. The structure can reduce the vibration of the engine by cooperating with the rubber part, but the structure can only reduce the vibration of the engine in the vertical direction, and cannot reduce the vibration of the engine in the horizontal direction. Summary of the invention

[0004] The present invention overcomes the shortcomings of the prior art that the vibration reduction suspension has a single vibration reduction effect on the forklift engine and cannot reduce vibration in all directions, and provides a forklift engine vibration reduction device, which can reduce the vibration of the engine in all directions, thereby achieving the purpose of all-round vibration reduction.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions: a forklift engine vibration reduction device, comprising: a vibration reduction suspension and a lateral pull rod, the vibration reduction suspension comprising: an engine bracket, an engine support, a buffer pad, an upper metal frame and a lower metal frame, the upper metal plate is a box-shaped structure, and the lower end surface has an opening; the lower metal frame is buckled with the upper metal frame; the buffer pad is arranged in the space where the upper metal frame and the lower metal frame are buckled.

[0006] The present invention arranges the buffer pad between the upper metal frame and the lower metal frame so that the buffer pad can not only play a vibration reduction role in the vertical direction, but also play a vibration reduction role in the horizontal direction, thereby reducing the vibration of the engine in all directions; at the same time, a transverse pull rod is arranged to further play an all-round vibration reduction role, thereby further reducing the overall vibration of the engine.

[0007] Preferably, protruding pieces are provided at both ends of the lower metal frame in the length direction, and buffer blocks are provided on the protruding pieces. The buffer blocks are respectively in contact with the side walls of the upper metal frame at both sides of the lower metal frame in the width direction.

[0008] Since the buffer block is arranged at both ends of the protruding piece, and the two end faces of the buffer block are in contact with the side walls of the upper metal frame, the buffer block can reduce the vibration from the direction perpendicular to the side walls of the metal frame, thereby further reducing the horizontal vibration of the engine. Therefore, the horizontal vibration of the engine can be reduced by setting the buffer block.

[0009] Preferably, the buffer block is provided with a bayonet, and the buffer block is fixed on the protruding piece through the bayonet.

[0010] Preferably, the upper end face and the lower end face of the buffer pad are fixedly connected with a metal sheet, the upper end of the metal sheet at the upper end face is connected with a metal plate, studs are provided on the metal plate, screw holes matching with the studs are provided on the upper metal plate and the engine bracket, and the upper metal plate and the buffer pad are connected to the engine bracket via the studs.

[0011] The metal sheet is provided so that the buffer pad can bear a larger load in the vertical direction, and at the same time the force on the buffer pad can be more uniform when bearing the load, thereby increasing the service life of the buffer pad and improving the vibration reduction effect of the buffer pad.

[0012] Preferably, the transverse tie rod comprises:

[0013] A through hole, wherein a stud mounting hole is arranged in the circumferential direction of the through hole, and the through hole is used to be sleeved at the exhaust port of the engine;

[0014] A vibration-damping hole, in which a cylindrical vibration-damping block is arranged;

[0015] The tie rod bracket is used to connect the transverse tie rod and the forklift bracket, and the tie rod bracket is connected to the cylindrical vibration damping block through bolts.

[0016] The cooperation between the through hole and the stud mounting hole enables the tie rod bracket to be well connected between the engine and the forklift. The cylindrical vibration damping block can reduce the vibration of the engine in all directions, especially in the radial direction perpendicular to the cylindrical vibration damping block. The vibration reduction effect is more obvious, effectively reducing the vibration caused by the engine.

[0017] Preferably, a vibration damping hole is provided in the cylindrical vibration damping block, the vibration damping hole has a protrusion in the circumferential direction and the axial direction thereof, a metal column is passed through the vibration damping hole, a spherical vibration damping cavity is provided in the vibration damping hole, and the metal column is provided with a vibration damping round head matching with the spherical vibration damping cavity.

[0018] The present invention provides a spherical vibration-damping cavity in a cylindrical vibration-damping block, cooperates with the vibration-damping round head of the metal column and the spherical vibration-damping cavity, and achieves a vibration-damping effect between the protrusion and the bolt, thereby reducing vibration from all directions of the engine and achieving an all-round vibration-damping effect.

[0019] Preferably, the cylindrical vibration damping block comprises an inner ring and an outer ring, the inner ring and the outer ring are connected in the same direction via a fan-shaped vibration damping block, and a reinforcing block is arranged on the inner wall of the outer ring at a position intersecting with the fan-shaped vibration damping block.

[0020] By setting the cylindrical vibration damping block into an inner ring and an outer ring, the heat dissipation effect of the cylindrical vibration damping block is improved, and the life of the cylindrical vibration damping block is prevented from being reduced due to frictional heat generated inside the cylinder due to vibration; at the same time, the fan-shaped vibration damping block can ensure the vibration damping effect of the cylindrical vibration damping block. And the fan-shaped vibration damping block can be set in the direction of greater vibration according to actual needs to achieve the best vibration damping effect.

[0021] Preferably, a heat dissipation device is provided between the upper metal frame and the lower metal frame.

[0022] The forklift mainly vibrates in the vertical direction during operation, so the vibration in the vertical direction will cause the buffer pad to generate a lot of heat. Especially when the forklift works continuously or in summer, the temperature of the buffer pad will rise sharply, reducing the service life of the buffer pad. Therefore, a heat dissipation device is provided to reduce the temperature of the buffer pad, thereby increasing the service life of the buffer pad.

[0023] Preferably, the heat dissipation device comprises:

[0024] A shell is fixedly arranged on the lower metal frame, a rotating shaft is rotatably penetrated through the shell, and a heat dissipation fan is arranged in the circumferential direction of the rotating shaft;

[0025] A rotating ring is sleeved in the circumferential direction of the heat dissipation fan and is fixedly connected to the heat dissipation fan. A rotating sleeve is sleeved on the outer periphery of the rotating ring. A sawtooth opening is arranged on the inner wall of the rotating sleeve in the circumferential direction. A ratchet is arranged on the outer wall of the rotating ring in the circumferential direction. A transmission gear ring is arranged on the outer circumferential direction of the rotating sleeve.

[0026] A transmission bar is fixedly arranged on the upper metal frame, and the transmission bar is meshed with the transmission gear ring.

[0027] Vibration causes the distance between the upper metal frame and the lower metal frame to change continuously, so that the transmission bar can continuously move relative to the rotating sleeve. Since a ratchet and a serrated opening are provided between the rotating sleeve and the rotating circle, the rotating sleeve can only drive the rotating circle in one direction, thereby realizing one-way rotation of the rotating circle when the transmission bar and the rotating sleeve continuously move relative to each other. The rotating circle drives the heat dissipation fan to continuously rotate in one direction, and the rotation of the heat dissipation fan increases the air flow near the buffer pad, thereby reducing the temperature at the buffer pad.

[0028] Preferably, a heat dissipation cavity is provided in the buffer pad, and the heat dissipation device is provided in the heat dissipation cavity, and the heat dissipation device comprises:

[0029] A heat dissipation sleeve, wherein the side wall of the heat dissipation sleeve is provided with air holes, and the heat dissipation sleeve is fixedly arranged on the lower end surface of the heat dissipation cavity;

[0030] A sliding rod, the upper end of which is fixedly arranged on the upper end plane of the heat dissipation cavity, a boss is arranged in the circumferential direction of the lower end of the sliding rod, the size of which matches the inner diameter of the heat dissipation sleeve, and the boss is slidably arranged in the heat dissipation sleeve;

[0031] The vibration-damping spring is arranged in the heat dissipation sleeve, and the upper and lower ends of the vibration-damping spring are respectively in contact with the bottom of the heat dissipation sleeve and the boss.

[0032] The use of the buffer pad will cause the buffer to generate a large amount of heat, which accelerates the aging of the buffer pad. By setting the boss, when the buffer pad is compressed, the boss will slide in the heat dissipation sleeve, so that airflow is generated in the heat dissipation sleeve. The airflow passes through the air holes to allow the air in the heat dissipation cavity to flow, thereby achieving the effect of lowering the temperature of the buffer pad. At the same time, the buffer pad will age due to long-term use, affecting the vibration reduction effect. By setting the vibration reduction spring, the vibration reduction effect of the present invention can be maintained when the buffer pad ages and the vibration reduction effect is poor.

[0033] Compared with the prior art, the present invention has the following beneficial effects: (1) it can reduce the vibration of the engine in all directions and achieve a good vibration reduction effect; (2) it is easy to disassemble and assemble, and easy to maintain; (3) it has a long service life. The cylindrical vibration reduction block is arranged into an inner ring and an outer ring, so that the cylindrical vibration reduction device can achieve a good heat dissipation effect. By arranging the heat dissipation device, the temperature of the buffer pad can be reduced, thereby increasing the service life of the vibration reduction suspension and the transverse tie rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is the overall structural diagram of the present invention;

[0035] Figure 2 It is a structural diagram of the vibration-damping suspension and the transverse tie rod of the present invention;

[0036] Figure 3 is a cross-sectional view of the vibration-damping mount of the present invention;

[0037] Figure 4 is an exploded view of the vibration-damping mount of the present invention;

[0038] Figure 5 is an exploded view of the transverse tie rod of the present invention;

[0039] Figure 6 is a cross-sectional view of a cylindrical vibration damping block of the present invention;

[0040] Figure 7 It is a structural diagram of a cylindrical vibration damping block of the present invention;

[0041] Figure 8 is a cross-sectional view of a vibration-damping mount according to another embodiment of the present invention;

[0042] Fig. 9 is a structural diagram of the heat dissipation device of the present invention;

[0043] Fig.10 is a cross-sectional view of a vibration-damping mount according to another embodiment of the present invention;

[0044] Fig.11 yes Fig.10 A partial enlarged view of the

[0045] In the figure: 1, vibration reduction suspension, 11, engine bracket, 111, bracket plate, 112, bracket mounting hole, 113, metal connecting plate, 114, screw hole, 115, bracket rib plate, 12, engine support, 13, upper metal frame, 14, lower metal frame, 141, convex piece, 15, buffer pad, 151, metal sheet, 152, metal plate, 153, stud, 154, heat dissipation cavity, 16 buffer block, 161, bayonet;

[0046] 2. Second vibration damping mount;

[0047] 3. lateral tie rod, 31. through hole, 311. mounting hole, 32. vibration reduction hole, 321. annular sleeve, 33. cylindrical vibration reduction block, 331. vibration reduction hole, 332. spherical vibration reduction cavity, 333. inner ring, 334. outer ring, 335. fan-shaped vibration reduction block, 336. reinforcement block, 337. protrusion, 34. tie rod bracket, 35. metal column, 351. vibration reduction round head;

[0048] 41. housing, 42. rotating shaft, 43. cooling fan, 44. rotating ring, 441. ratchet, 45. rotating sleeve, 451. sawtooth opening, 452. transmission gear ring;

[0049] 51. heat dissipation sleeve, 511. air hole, 52. sliding rod, 521. boss, 53. vibration-damping spring. DETAILED DESCRIPTION

[0050] The technical solution of the present invention is further described in detail below through specific embodiments and in conjunction with the accompanying drawings:

[0051] Example 1: Reference Figures 1 to 7 As shown, a forklift engine vibration reduction device includes: a vibration reduction mount 1 and a transverse tie rod 3, the vibration reduction mount 1 is used to connect the engine and the forklift frame; the transverse tie rod 3 is used to connect the engine and the forklift frame; the vibration reduction mount 1 includes:

[0052] An engine bracket 11, connected to the engine by bolts;

[0053] The engine support 12 is connected to the forklift frame by bolts;

[0054] An upper metal frame 13, which is a box-shaped structure, connected to the engine bracket 11 by bolts, and has an opening on the lower end surface;

[0055] The lower metal frame 14 is engaged with the upper metal frame 13 and connected to the engine support 12 by bolts;

[0056] The buffer pad 15 is arranged in the space where the upper metal frame 13 and the lower metal frame 14 are buckled. In this embodiment, the buffer pad 15 is made of rubber material.

[0057] The second vibration-damping mount 2 is respectively arranged on both sides of the engine with the vibration-damping mount 1. The second vibration-damping mount 2 has the same structure as the vibration-damping mount 1.

[0058] The present invention arranges the buffer pad between the upper metal frame 13 and the lower metal frame 14, so that the buffer pad 15 can not only play a vibration reduction role in the vertical direction, but also play a vibration reduction role in the horizontal direction, thereby reducing the vibration of the engine in all directions; at the same time, the transverse pull rod 3 is arranged to further play an all-round vibration reduction role, further reducing the overall vibration of the engine.

[0059] Lugs 141 are provided at both ends of the lower metal frame 14 in the length direction, and buffer blocks 16 are provided on the lugs 141. The buffer blocks 16 are respectively in contact with the side walls of the upper metal frame 13 on both sides of the width direction of the lower metal frame 14. A bayonet 161 is provided on the buffer block 16, and the buffer block 16 is fixed on the lug 141 through the bayonet 161. The buffer block 16 and the lug 141 are formed by high-temperature vulcanization.

[0060] Since the buffer block 16 is arranged at both ends of the protruding piece 141, and the two end faces of the buffer block 16 are in contact with the side wall of the upper metal frame 13, the buffer block 16 can reduce the vibration from the vertical metal frame side wall direction, so as to further reduce the vibration of the engine in the horizontal direction. Therefore, the vibration of the engine in the horizontal direction can be reduced by setting the buffer block 16. At the same time, in order to enable the buffer block 16 to produce a vibration reduction effect in all directions in the horizontal direction, the buffer block 16 is arranged to abut against the inner side wall of the upper metal frame 13 in the two end directions of the length direction of the lower metal frame 14, so that the buffer block 16 abuts against the inner side wall of the upper metal frame 13 in four directions, so that the buffer block 16 can produce abutment in four directions at the same time, reducing the vibration from all directions in the horizontal direction.

[0061] The upper and lower end surfaces of the buffer pad 15 are fixedly connected with a metal sheet 151, the upper end of the metal sheet 151 at the upper end surface is connected with a metal plate 152, the metal plate 152 is provided with a stud 153, the upper metal frame 13 and the engine bracket 11 are provided with screw holes that match the stud 153, and the upper metal frame 13 and the buffer pad 15 are connected to the engine bracket 11 through the stud 153. The lower end surface of the buffer pad 15 is connected to the lower metal frame 14 through the metal sheet 151.

[0062] The metal sheet 151 is provided so that the buffer pad 15 can bear a larger load in the vertical direction, and at the same time the force on the buffer pad 15 can be more uniform when bearing the load, thereby increasing the service life of the buffer pad 15 and improving the vibration reduction effect of the buffer pad 15.

[0063] The transverse tie rod 3 comprises:

[0064] A through hole 31, a stud mounting hole 311 is provided in the circumferential direction of the through hole 31, and the through hole 31 is used to be sleeved at the exhaust port of the engine;

[0065] The vibration-damping hole 32 has a cylindrical vibration-damping block 33 disposed therein; an annular sleeve 321 is welded in the vibration-damping hole 32, and the cylindrical vibration-damping block 33 is disposed in the annular sleeve by a high-temperature vulcanization molding process.

[0066] The tie rod bracket 34 is used to connect the transverse tie rod 3 and the forklift bracket. The tie rod bracket 34 is connected to the cylindrical vibration damping block 33 through bolts.

[0067] The cooperation between the through hole 31 and the stud mounting hole 311 enables the tie rod bracket 34 to well connect the engine and the forklift frame. The cylindrical vibration damping block 33 can reduce the vibration of the engine in all directions, especially in the radial direction perpendicular to the cylindrical vibration damping block 33. The vibration reduction effect is more obvious, effectively reducing the vibration caused by the engine.

[0068] A vibration-damping hole 331 is provided in the cylindrical vibration-damping block 33. The vibration-damping hole 331 has a protrusion 337 in the circumferential direction and the axial direction thereof. A metal column 35 is passed through the vibration-damping hole 331. A spherical vibration-damping cavity 332 is provided in the vibration-damping hole 331. The metal column 35 is provided with a vibration-damping round head 351 that matches the spherical vibration-damping cavity 332. In this embodiment, the cylindrical vibration-damping block 33 is made of rubber material.

[0069] The present invention provides a spherical vibration-damping cavity 332 in the cylindrical vibration-damping block 33, and the vibration-damping round head 351 of the metal column 35 cooperates with the spherical vibration-damping cavity 332, as well as the vibration-damping effect between the protrusion 337 and the bolt, so that the vibration from all directions of the engine can be reduced, thereby achieving an all-round vibration-damping effect.

[0070] The cylindrical vibration damping block 33 includes an inner ring 333 and an outer ring 334 , which are connected in the same direction by a fan-shaped vibration damping block 335 , and a reinforcing block 336 is arranged on the inner wall of the outer ring 334 at a position intersecting with the fan-shaped vibration damping block 335 .

[0071] By configuring the cylindrical vibration damping block 33 to be an inner ring 333 and an outer ring 334, the heat dissipation effect of the cylindrical vibration damping block 33 is improved, and frictional heat generated inside the cylindrical vibration damping block 33 due to vibration is prevented from being reduced in service life of the cylindrical vibration damping block 33; at the same time, configuring the fan-shaped rubber 335 can ensure the vibration damping effect of the cylindrical vibration damping block.

[0072] The engine bracket 11 includes:

[0073] A bracket plate 111, wherein a bracket mounting hole 112 is provided on the bracket plate 111, and the bracket plate 111 is connected to the engine through the bracket mounting hole 112;

[0074] An upper metal connecting plate 113, on which screw holes 114 are provided;

[0075] The support rib plate 115 is connected to the metal connecting plate 113 and the support plate 111 to improve the strength of the engine support.

[0076] The engine bracket makes it easier to connect the vibration damping mount to the engine and also makes it easier to disassemble, assemble and overhaul the vibration damping mount.

[0077] Example 2: Reference Figure 8 , Fig. 9 The structure of this embodiment is similar to that of the first embodiment, except that a heat dissipation device is provided between the upper metal frame 13 and the lower metal frame 14. The heat dissipation device includes:

[0078] The housing 41 is fixedly mounted on the lower metal frame 14. A rotating shaft 42 is rotatably provided on the housing 41. A cooling fan 43 is provided in the circumferential direction of the rotating shaft 42.

[0079] The rotating ring 44 is sleeved in the circumferential direction of the heat dissipation fan 43 and is fixedly connected to the heat dissipation fan 43. The outer periphery of the rotating ring 44 is sleeved with a rotating sleeve 45. The inner wall of the rotating sleeve 45 is provided with a sawtooth opening 451 in the circumferential direction. The outer wall of the rotating ring 44 is provided with a ratchet 441 in the circumferential direction. The outer wall of the rotating ring 44 is provided with a transmission gear ring 452 in the circumferential direction.

[0080] The transmission bar 46 is fixedly disposed on the upper metal frame 13 , and the transmission bar 46 is meshed with the transmission gear ring 452 .

[0081] The forklift mainly generates vibrations in the vertical direction during operation, so the vibration in the vertical direction will cause the buffer pad 15 to generate a large amount of heat, especially when the forklift is working continuously or in summer, the temperature of the buffer pad 15 will rise sharply, reducing the service life of the buffer pad 15. Therefore, a heat dissipation device is provided to reduce the stability of the buffer pad 15, so as to increase the service life of the buffer pad 15. At the same time, in this embodiment, in order to achieve better vibration reduction and heat dissipation effects, the buffer pad 15 can be set to a rubber with a softer texture, so as to improve the vibration reduction effect of the engine, and a certain vibration reduction damping is generated through the movement between the transmission bar 46 and the transmission gear ring 452 of the heat dissipation device. Vibration causes the distance between the upper metal frame 13 and the lower metal frame 14 to change continuously, so that the transmission bar can continuously move relative to the rotating sleeve 45. Since a ratchet 441 and a serrated opening 451 are provided between the rotating sleeve 45 and the rotating circle 44, the rotating sleeve can only drive the rotating circle in one direction, thereby realizing the unidirectional rotation of the rotating circle when the transmission bar 46 and the rotating sleeve 45 continuously move relative to each other. The rotating circle 44 drives the heat dissipation fan 43 to continuously rotate in one direction, and the rotation of the heat dissipation fan 43 increases the air flow near the buffer pad 15, thereby reducing the temperature at the buffer pad 15.

[0082] Example 3: Reference Figure 10 to Figure 11The present embodiment is similar in structure to the embodiment 1, except that a heat dissipation cavity 154 is provided in the buffer pad 15, and a heat dissipation device is provided in the heat dissipation cavity 154, and the heat dissipation device includes:

[0083] A heat dissipation sleeve 51, wherein a pore 511 is disposed on a side wall of the heat dissipation sleeve 51, and the heat dissipation sleeve 51 is fixedly disposed on a lower end surface of the heat dissipation cavity 154;

[0084] A sliding rod 52, the upper end of which is fixedly disposed on the upper end plane of the heat dissipation cavity 154, and a boss 521 is disposed in the circumferential direction of the lower end of the sliding rod 52, the size of which matches the inner diameter of the heat dissipation sleeve 51, and the boss 521 is slidably disposed in the heat dissipation sleeve 51;

[0085] The damping spring 53 is disposed in the heat dissipation sleeve 51 , and the upper and lower ends of the damping spring 53 are respectively in contact with the bottom of the heat dissipation sleeve 51 and the boss 521 .

[0086] The use of the buffer pad 15 will generate a large amount of heat, which accelerates the aging of the buffer pad 15. By setting the boss 521, when the buffer pad 15 is compressed, the boss 521 will slide in the heat dissipation sleeve 51, so that airflow is generated in the heat dissipation sleeve 51. The airflow passes through the air hole 511 to allow the air in the heat dissipation cavity 154 to flow, thereby achieving the effect of lowering the temperature of the buffer pad 15; at the same time, the buffer pad 15 will age due to long-term use, affecting the vibration reduction effect. By setting the vibration reduction spring 53, when the buffer pad 15 ages and the vibration reduction effect is poor, the vibration reduction effect of the present invention can be maintained; at the same time, it can also play a certain vibration reduction role in normal use, so that the overall shock absorption effect is better.

[0087] The present invention arranges a vibration-damping suspension 1 and arranges a buffer pad 15 between an upper metal frame 13 and a lower metal frame 14, so that the buffer pad 15 can not only play a vibration-damping role in the vertical direction, but also play a vibration-damping role in the horizontal direction, thereby reducing the vibration of the engine in all directions; the two end faces of the buffer block 16 are in contact with the side wall of the upper metal frame, which makes it possible for the buffer block 16 to reduce the vibration in the direction perpendicular to the side wall of the upper metal frame 13, thereby further reducing the vibration of the engine in the horizontal direction; at the same time, a transverse pull rod 3 is arranged, and the cooperation between the spherical vibration-damping cavity 332 in the cylindrical vibration-damping block 33 and the vibration-damping round head 351 further plays an all-round vibration-damping role, thereby further reducing the overall vibration of the engine.

[0088] The above embodiments are only preferred solutions of the present invention and are not intended to limit the present invention in any form. There are other variations and modifications without exceeding the technical solutions described in the claims.

Claims

1. A forklift engine vibration reduction device, characterized in that: include: The vibration-damping suspension and the transverse tie rod, the vibration-damping suspension comprises: an engine bracket, an engine support, a buffer pad, an upper metal frame and a lower metal frame, the upper metal frame is a box-shaped structure, and the lower end surface has an opening; the lower metal frame is buckled with the upper metal frame; the buffer pad is arranged in the space where the upper metal frame and the lower metal frame are buckled; a heat dissipation device is arranged between the upper metal frame and the lower metal frame; the heat dissipation device comprises: The shell is fixedly arranged on the lower metal frame, a rotating shaft is rotatably penetrated through the shell, and a heat dissipation fan is arranged in the circumferential direction of the rotating shaft; The rotating ring is sleeved in the circumferential direction of the heat dissipation fan and is fixedly connected to the heat dissipation fan. The outer periphery of the rotating ring is sleeved with a rotating sleeve. The inner wall of the rotating sleeve is provided with a sawtooth opening in the circumferential direction. The outer wall of the rotating ring is provided with a ratchet in the circumferential direction. The outer wall of the rotating ring is provided with a transmission gear ring in the circumferential direction. The transmission bar is fixedly arranged on the upper metal frame, and the transmission bar is meshed with the transmission gear ring.

2. The forklift engine vibration reduction device according to claim 1, characterized in that: Lugs are arranged at both ends of the lower metal frame in the length direction, and buffer blocks are arranged on the lugs. The buffer blocks are respectively in contact with the side walls of the upper metal frame at both sides of the lower metal frame in the width direction.

3. The forklift engine vibration reduction device according to claim 2, characterized in that: The buffer block is provided with a bayonet, and the buffer block is fixedly arranged on the protruding piece through the bayonet.

4. The forklift engine vibration reduction device according to claim 1, characterized in that: The upper end surface and the lower end surface of the buffer pad are fixedly connected with a metal sheet, the upper end of the metal sheet at the upper end surface is connected with a metal plate, studs are arranged on the metal plate, screw holes matching with the studs are arranged on the upper metal frame and the engine bracket, and the upper metal frame and the buffer pad are connected to the engine bracket through the studs.

5. The forklift engine vibration reduction device according to claim 1, characterized in that: The transverse tie rod comprises: A through hole, wherein a stud mounting hole is arranged in the circumferential direction of the through hole, and the through hole is used to be sleeved at the exhaust port of the engine; A vibration-damping hole, in which a cylindrical vibration-damping block is arranged; The tie rod bracket is used to connect the transverse tie rod and the forklift frame, and the tie rod bracket is connected to the cylindrical vibration damping block through bolts.

6. The forklift engine vibration reduction device according to claim 5, characterized in that: A vibration-damping hole is arranged in the cylindrical vibration-damping block, the vibration-damping hole has a protrusion in the circumferential direction and the axial direction thereof, a metal column is passed through the vibration-damping hole, a spherical vibration-damping cavity is arranged in the vibration-damping hole, and the metal column is provided with a vibration-damping round head matching with the spherical vibration-damping cavity.

7. The forklift engine vibration reduction device according to claim 5, characterized in that: The cylindrical vibration damping block comprises an inner ring and an outer ring, the inner ring and the outer ring are connected in the same direction through a fan-shaped vibration damping block, and a reinforcing block is arranged on the inner wall of the outer ring at a position staggered with the fan-shaped vibration damping block.

8. The forklift engine vibration reduction device according to claim 1, characterized in that: The buffer pad is made of rubber material.

9. The forklift engine vibration reduction device according to claim 1, characterized in that: A heat dissipation cavity is provided in the buffer pad, and the heat dissipation device is provided in the heat dissipation cavity. The heat dissipation device comprises: A heat dissipation sleeve, wherein the side wall of the heat dissipation sleeve is provided with air holes, and the heat dissipation sleeve is fixedly arranged on the lower end surface of the heat dissipation cavity; A sliding rod, the upper end of which is fixedly arranged on the upper end plane of the heat dissipation cavity, a boss is arranged in the circumferential direction of the lower end of the sliding rod, the size of which matches the inner diameter of the heat dissipation sleeve, and the boss is slidably arranged in the heat dissipation sleeve; The vibration-damping spring is arranged in the heat dissipation sleeve, and the upper and lower ends of the vibration-damping spring are respectively in contact with the bottom of the heat dissipation sleeve and the boss.

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